Thd EF 2xTCIII isn't as good as the EF 1.4xTCIII. You should find the 14.4xTC much better with little image degradation in comparison. By the way, the last bird is a Greylag Goose.
Thank you Alan. It was a great evening light-wise. But a bit crowded.
This Sunday afternoon I’ll pack my gear and travel to the artipelag here outside of Stockholm to see if I can spot a bird of prey or two